character: Michael Smith
topic: Alternative Fuels and Their Effects on Emissions
grade: 9
subject: Science
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character: Jane Doe
topic: Renewable Energy Sources and Pollution Reduction
grade: 9
subject: Science
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character: John Lee
topic: Impact of Biofuels on Carbon Footprint
grade: 9
subject: Science
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character: Emily Chen
topic: Comparative Study of Emission Levels from Different Fuels
grade: 9
subject: Science
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